import React from "react"
import { Upload, message } from 'antd';
import { LoadingOutlined, PlusOutlined } from '@ant-design/icons';



function beforeUpload(file) {
  const isJpgOrPng = file.type === 'image/jpeg' || file.type === 'image/png';
  if (!isJpgOrPng) {
    message.error('You can only upload JPG/PNG file!');
  }
  const isLt2M = file.size / 1024 / 1024 < 2;
  if (!isLt2M) {
    message.error('Image must smaller than 2MB!');
  }
  return isJpgOrPng && isLt2M;
}

class UploadProductImage extends React.Component {
  state = {
    loading: false,
    imgUrl:""
  };

  handleChange = info => {
    if (info.file.status === 'uploading') {
      this.setState({ loading: true });
      return;
    }
    if(info.file.status==='done'){
        //Get this url from response in real world
        // console.log(...info.file);
        this.setState({
            imgUrl:info.file.response.headimgurl,
            loading:false
        })
        //重要  将当前表单的值回传给FromItem的关键方法
        this.props.onChange(info.file.response.headimgurl)
    }
   
  };

  render() {
    const { loading, imageUrl } = this.state;
    const uploadButton = (
      <div>
        {loading ? <LoadingOutlined /> : <PlusOutlined />}
        <div style={{ marginTop: 8 }}>Upload</div>
      </div>
    );
    return (
      <Upload
      imgUrl={this.state.imgUrl}
        name="headimgurl"
        listType="picture-card"
        className="avatar-uploader"
        showUploadList={false}
        action="/api1/students/uploadStuAvatar"
        beforeUpload={beforeUpload}
        onChange={this.handleChange}
      >
        {this.state.imgUrl ? <img src={this.state.imgUrl} alt="avatar" style={{ width: '100%' }} /> : uploadButton}
      </Upload>
    );
  }
}

export default UploadProductImage